公开(公告)号：US20230137362A1

公开(公告)日：2023-05-04

申请号：US17972767

申请日：2022-10-25

Applicant: LG ELECTRONICS INC.

Inventor： Yongkyu CHOI ,  Kiyoul NOH ,  Bumdong SA

IPC: F04C14/12

Abstract: A rotary compressor, including a cylinder, an inner peripheral surface of which is defined in an annular shape to define a compression space, provided with a suction port configured to communicate with the compression space to suction and provide refrigerant to the compression space; a roller rotatably provided in the compression space of the cylinder, and including with a plurality of vane slots at predetermined intervals along an outer peripheral surface, the plurality of vanes each providing a back pressure at one side thereinside; a plurality of vanes slidably inserted into the plurality of vane slots, respectively, to rotate together with the roller, front end surfaces of the plurality of vanes coming into contact with an inner periphery of the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers; and a main bearing and a sub bearing provided at both ends of the cylinder, respectively.

公开(公告)号：US20180372104A1

公开(公告)日：2018-12-27

申请号：US16010687

申请日：2018-06-18

Applicant: LG Electronics Inc.

Inventor： Seokhwan MOON ,  Seoung-Min KANG ,  Kiyoul NOH

IPC: F04C29/12 ,  F04C18/344

Abstract: The present disclosure provides a compressor including a rounded portion surrounding a discharge port, including a cylinder without an oil-blocking structure for ease of shaping the rounded portion, and including a valve-recess cover coupled to the cylinder. At least one valve-recess is defined in an outer face portion of the cylinder. A discharge valve assembly is fixedly received in the valve-recess, wherein the discharge valve assembly is configured for opening and closing the discharge port. The valve-recess is defined between the outer face, primary and secondary side blocks. The rounded portion surrounds the discharge port, to reduce a contact area between the discharge port and the valve assembly.

公开(公告)号：US20200277956A1

公开(公告)日：2020-09-03

申请号：US16734679

申请日：2020-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul NOH ,  Seokhwan Moon ,  Joonhong Park

IPC: F04C18/344 ,  F04C15/06

Abstract: A vane rotary compressor may include a main bearing and a sub bearing provided with a plurality of back pressure pockets each having a different pressure formed on a surface facing the cylinder, a rotational shaft radially supported by the main bearing and the sub bearing, a roller provided with a back pressure chamber that communicates with the plurality of back pressure pockets and having a plurality of vanes configured to divide a compression space into a plurality of compression chambers. At least one of the main bearing or the sub bearing is provided with an oil supply passage that communicates with a back pressure pocket having a relatively low pressure among the plurality of back pressure pockets. Accordingly, oil may be smoothly supplied to a back pressure pocket having a low pressure.

公开(公告)号：US20200158111A1

公开(公告)日：2020-05-21

申请号：US16541260

申请日：2019-08-15

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong PARK ,  Kiyoul NOH ,  Seokhwan MOON

IPC: F04C18/344

Abstract: A vane rotary compressor includes a roller rotatably supported in a cylinder and including a plurality of vane slots formed along a circumferential direction with back pressure chambers formed at one end of each of the vane slots A plurality of vanes are slidably supported in the vane slots protruding toward an inner circumferential surface of the cylinder. A compression space formed by the vanes between the roller and the cylinder includes an inlet port and an outlet port formed at both sides of a contact point between the roller and the cylinder. A vane positioned between the inlet port and the outlet port is configured such that a front gap between a front surface of the vane and the inner circumferential surface of the cylinder is smaller than a rear gap between a rear surface of the vane and an inner surface of the back pressure chamber.

公开(公告)号：US20180372102A1

公开(公告)日：2018-12-27

申请号：US16019891

申请日：2018-06-27

Applicant: LG Electronics Inc.

Inventor： Seokhwan MOON ,  Kiyoul NOH ,  Jinung SHIN

IPC: F04C18/344 ,  F04C23/00 ,  F25B31/02 ,  F25B1/10

Abstract: The present disclosure relates to a two-stage rotary compressor in which refrigerant inhaled into a compression space of a cylinder is compressed sequentially in two axially connected compression chambers and then is discharged. A rotary compressor according to an embodiment of the present disclosure includes a first compression unit and a second compression unit arranged on and along a single rotation shaft. Middle-pressure refrigerant discharged from the first compression unit flows into the second compression unit. A maximum gas force of the first compression unit and a maximum gas force of the second compression unit counteract with each other, thereby reducing a reaction force acting on a rotation shaft. According to the present disclosure, a single rotary compressor is configured to separately achieve the stroke volume increase and the compression period increase.

公开(公告)号：US20180340534A1

公开(公告)日：2018-11-29

申请号：US15986114

申请日：2018-05-22

Applicant: LG Electronics Inc.

Inventor： Jinung SHIN ,  Seokhwan MOON ,  Kiyoul NOH

IPC: F04C18/344 ,  F04C29/00 ,  F04C29/12

Abstract: A rotary compressor includes a cylinder that is coupled to an inner space of a casing and that defines a compression space, a first bearing and a second bearing located at upper and lower sides of the cylinder, a roller disposed eccentrically with respect to an inner circumferential surface of the cylinder to vary a volume of the compression space based on rotation, and a vane inserted into the roller to rotate together with the roller, and drawn out toward the inner circumferential surface of the cylinder during the rotation of the roller to partition the compression space into a plurality of compression chambers. A suction passage communicating with the compression space is defined in the first bearing or the second bearing, and a suction port communicating between the suction passage and the compression space is defined on a side surface of the cylinder.

公开(公告)号：US20230366398A1

公开(公告)日：2023-11-16

申请号：US18196028

申请日：2023-05-11

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul NOH ,  Yongkyu Choi ,  Minho Lee

IPC: F04C15/00

CPC classification number: F04C15/0057 ,  F04C15/0088 ,  F04C2240/30

Abstract: A rotary compressor is provided that may include a casing, a cylinder having an inner circumferential surface in an annular shape, a roller rotatably disposed in a compression space of the cylinder, a rotational shaft coupled to an inner circumference of the roller, main and sub bearings defining surfaces of the compression space, and a sub bearing cover coupled to the sub bearing to cover one end of the sub bearing and defining a discharge chamber with the sub bearing to communicate with the compression space so as to accommodate compressed refrigerant to be discharged. The sub bearing or the sub bearing cover may include a first barrier rib that protrudes from a surface thereof located inside of the discharge chamber. The first barrier rib may be spaced apart from a surface opposite to the surface within the discharge chamber by a predetermined distance.

公开(公告)号：US20230047035A1

公开(公告)日：2023-02-16

申请号：US17967094

申请日：2022-10-17

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul NOH ,  Seokhwan MOON ,  Joonhong PARK

IPC: F04C18/344 ,  F04C15/06

Abstract: A vane rotary compressor may include a main bearing and a sub bearing provided with a plurality of back pressure pockets each having a different pressure formed on a surface facing the cylinder, a rotational shaft radially supported by the main bearing and the sub bearing, a roller provided with a back pressure chamber that communicates with the plurality of back pressure pockets and having a plurality of vanes configured to divide a compression space into a plurality of compression chambers. At least one of the main bearing or the sub bearing is provided with an oil supply passage that communicates with a back pressure pocket having a relatively low pressure among the plurality of back pressure pockets. Accordingly, oil may be smoothly supplied to a back pressure pocket having a low pressure.

公开(公告)号：US20220034318A1

公开(公告)日：2022-02-03

申请号：US17502098

申请日：2021-10-15

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong PARK ,  Kiyoul NOH ,  Seokhwan MOON

IPC: F04C18/344 ,  F04C29/02

Abstract: A vane rotary compressor includes a roller rotatably supported in a cylinder and including a plurality of vane slots formed along a circumferential direction with back pressure chambers formed at one end of each of the vane slots. A plurality of vanes are slidably supported in the vane slots protruding toward an inner circumferential surface of the cylinder. A compression space formed by the vanes between the roller and the cylinder includes an inlet port and an outlet port formed at both sides of a contact point between the roller and the cylinder. A vane positioned between the inlet port and the outlet port is configured such that a front gap between a front surface of the vane and the inner circumferential surface of the cylinder is smaller than a rear gap between a rear surface of the vane and an inner surface of the back pressure chamber.

公开(公告)号：US20210301823A1

公开(公告)日：2021-09-30

申请号：US17179708

申请日：2021-02-19

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Seseok SEOL ,  Kiyoul NOH

IPC: F04C18/356 ,  F04C29/12

Abstract: A rotary compressor is provided that may include a rotational shaft, first and second bearings configured to support the rotational shaft in a radial direction, a cylinder disposed between the first and second bearings to form a compression space, a rotor disposed in the compression space to form a contact point forming a predetermined gap with the cylinder and coupled to the rotational shaft to compress a refrigerant as the rotor rotates, and at least one vane slidably inserted into the rotor, the at least one each vane coming into contact with an inner peripheral surface of the cylinder to separate the compression space into a plurality of regions. The at least one vane may include a pin that extends upward or downward, and a lower surface of the first bearing or an upper surface of the second bearing may include a rail groove into which the pin may be inserted.